Psychology student Dani Ardor is traumatized after her sister Terri kills herself and their parents by filling their home with carbon monoxide. The incident strains Dani's relationship with her emotionally distant boyfriend, cultural anthropology student Christian Hughes. She later learns that Christian and his friends Mark and Josh have been invited by their mutual Swedish friend Pelle to attend a midsummer celebration at Pelle's ancestral commune, the Hårga, in Hälsingland. The celebration occurs only once every 90 years and Josh, also an anthropology student, wants to write his thesis on it. Christian hid the trip from Dani, wanting to break up with her before leaving, but invites her along after she finds out about it, although he does not think she will actually come.
Justin Green (Justin Considine Green) is an American cartoonist who is known as the "father of autobiographical comics." A key figure and pioneer in the 1970s generation of underground comics artists, he is best known for his 1972 comic book "Binky Brown Meets the Holy Virgin Mary."